Joints and connections – Interfitted members – Including separably interposed key
Patent
1974-12-24
1976-12-07
Kundrat, Andrew V.
Joints and connections
Interfitted members
Including separably interposed key
403 27, 73 715US, 403 11, F16D 108, G01N 2302
Patent
active
039959686
ABSTRACT:
A rotor disc for a rotor shaft member of an axial flow turbine apparatus is disclosed. The disc has disposed externally thereon a flat surface which lies parallel to a predetermined longitudinal plane extending within the disc. The plane is disposed within the disc so as to extend through a keyway utilized to prevent rotation of the disc relative to the shaft. The predetermined longitudinal plane within the disc is the plane in which cracking of the disc is most likely to occur. The externally disposed, flat, surface area of the disc permits an ultrasonic signal emitted from a transducer disposed adjacent to the external surface to propagate in a direction substantially perpendicular to the predetermined plane within the disc.
REFERENCES:
patent: 1107238 (1914-08-01), Kieser
patent: 1734188 (1929-11-01), Wilson
patent: 1873956 (1932-08-01), Dahlstrand
patent: 3513802 (1970-05-01), Potter
Campbell, Jr. George T.
Sherlock Thomas P.
Kundrat Andrew V.
Telfer G. H.
Westinghouse Electric Corporation
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